Snowball.
This pig is responsible for convincing the other animals on the farm of whatever they need to understand.
Squealer
This character introduces the ideas that inspire the rebellion.
Old Major
This is how many commandments are written on the side of the barn.
Seven.
This character is well known for his famous phrase, "I will work harder."
Boxer.
One of the pigs suggests this construction project early on, which causes much argument and disagreement.
The Windmill.
This is how Napoleon punished the hens who would not give up their eggs.
He cuts off their food supply, leading to starvation. Nine hens die.
This is the mistake that Jones makes, which immediately sparks the Rebellion.
Forgetting to feed the animals.
This is the first commandment to change, and what it changes to.
"No Animal Shall Sleep in a Bed" changed to "No Animal Shall Sleep in a Bed With Sheets"
This real-world system of government inspired the system in the novel that the animals put into place after the rebellion.
Communism.
The animals have this realization when looking through the window at the pigs and the humans playing cards.
They cannot tell them apart any longer.
This term applies to the method of using disinformation, misleading statistics, playing on peoples'/animals' fears to get them to go along with something, usually a government or military action.
Propaganda.
The work-horse character on the farm most accurately represents this group of people during the Russian Revolution.
The Working Class/The Workers/Soviets
These disappears at the end of Chapter II, signalling that the pigs may not be interested in equality and the well-being of all of the animals on the farm.
Milk and Apples.
Jones arrives on the farm, with help, to take it back from the animals.
In Chapter X, this scene causes Clover to scream so loudly, that the other animals on the farm gather to investigate.
The pigs are walking on two legs.
This character is responsible for the destruction of the second windmill.
Frederick.
Snowball most accurately represents this figure of the Russian Revolution.
Leon Trotsky.
"All Animals Are Equal, But Some Animals are More Equal Than Others."
This character realizes that Boxer isn't going where the pigs said that he was because he is one of the few animals who can read well.
Benjamin.
Napoleon blames Snowball for everything that goes wrong on the farm because he needs one of these to distract from his own mistakes.
A Scapegoat.
Along with complicated explanations and statistics, Squealer does this whenever he needs to convince the animals of the farm that he is right and/or being truthful.
Swishes his tail/whiskers from side to side.
The pigs initial takeover and promises of equality most accurately line up with Vladimir Lenin and the ___________, the group that started the Russian Revolution.
The Bolsheviks.
Highlighting his willingness to betray principles for power, Napoleon establishes a relationship with this character, helping him do business with other, human farms.
Mr. Whymper
This animal on the farm most closely represents a spiritual angle, or acts as an allegorical stand in for the church.
Moses, the Raven.